Are there any online competitions for Reinforcement Learning?
AICrowd has numerous challenges in the domain, with some very interesting challenges running currently. Here is a short list:

https://www.aicrowd.com/challenges?&amp;categories=reinforcement-learning (Complete list with RL tag)
https://www.aicrowd.com/challenges/neurips-2020-procgen-competition
https://www.aicrowd.com/challenges/neurips-2020-flatland-challenge
https://www.aicrowd.com/challenges/neurips-2019-minerl-competition

Hope this helps!